Seeded optical parametric generator based on OP-GaAs for mid-wave and long-wave infrared beam generation

Ziya Gürkan Figen

doi:10.1117/12.2665756

5 June 2023 Seeded optical parametric generator based on OP-GaAs for mid-wave and long-wave infrared beam generation

Ziya Gürkan Figen

Proceedings Volume 12569, Nonlinear Optics and Applications XIII; 1256906 (2023) https://doi.org/10.1117/12.2665756
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Abstract

We propose and theoretically analyze a novel device with a simple architecture for high power mid-wave and long-wave infrared beam generation by employing a realistic model that takes the diffraction of the beams into account. The device is a seeded optical parametric generator (OPG) based on an aperiodic orientation-patterned GaAs (OP-GaAs) grating in which two optical parametric amplification (OPA) processes, OPA1 and OPA2, are simultaneously quasi-phase-matched along the full length of the crystal. When pumped by a high-repetition-rate nanosecond-pulsed pump laser operating at 2.1 μm and a low-power continuous-wave seed source at a wavelength of 2.74 μm (signal), OPA1 in this crystal generates a long-wave infrared beam output at a wavelength of 8.8 μm (idler) whose power conversion efficiency is enhanced by means of OPA2 compared to what is achievable with a single OPA process. OPA2 occurs as signal photons are down-converted to idler photons and difference-frequency (DF) photons at a wavelength of 3.98 μm. These wavelengths have important applications in the fields such as infrared laser projector technologies, countermeasures against heat seeking missiles, remote sensing, and spectroscopy.

Citation Download Citation

Ziya Gürkan Figen "Seeded optical parametric generator based on OP-GaAs for mid-wave and long-wave infrared beam generation", Proc. SPIE 12569, Nonlinear Optics and Applications XIII, 1256906 (5 June 2023); https://doi.org/10.1117/12.2665756

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